CN101990210B - Distribution method of PCIs (Physical Cell Identities) in long-term evolution network - Google Patents

Distribution method of PCIs (Physical Cell Identities) in long-term evolution network Download PDF

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CN101990210B
CN101990210B CN 200910161540 CN200910161540A CN101990210B CN 101990210 B CN101990210 B CN 101990210B CN 200910161540 CN200910161540 CN 200910161540 CN 200910161540 A CN200910161540 A CN 200910161540A CN 101990210 B CN101990210 B CN 101990210B
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pci
base station
cell
space
macro base
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CN101990210A (en )
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付文品
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中兴通讯股份有限公司
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Abstract

本发明披露了一种长期演进网络中物理小区标识PCI的分配方法,包括:从PCI范围内先划分出两块各自连续的PCI空间,其中:一块用于微微基站小区PCI的分配;另一块用于宏基站小区PCI的分配,且分配给宏基站小区的PCI空间足够大,以使宏基站小区的PCI复用距离足够远;PCI复用距离足够远是指组成宏基站足够的宏蜂窝簇的环数乘以小区直径,PCI空间足够大是指分配的PCI数目至少等于足够的宏蜂窝簇的小区总数。 The present invention discloses a long-term evolution network physical cell identity PCI allocation method, comprising: a first range from the PCI divided into two respective contiguous PCI space, wherein: a base station for a pico cell PCI assignment; with another block PCI of the cell to the macro base station allocation, and assigned to the macro base station cell PCI space large enough to allow PCI macro base station cell reuse distance far enough; PCI reuse distance sufficiently far enough is a component of a macro base station of the macrocell clusters cell multiplied by the number of ring diameter, PCI space is large enough PCI refers to the number assigned at least equal to the total number of cells sufficient macrocell clusters. 本发明保证在宏蜂窝和微微蜂窝所使用不同的PCI空间前提下,能使宏蜂窝的PCI复用距离足够远,且使微微蜂窝之间PCI冲突的概率较低,并为网络扩容预留资源。 The present invention ensures that the picocell and macrocell in the space under the premise of using different PCI, PCI macrocell can reuse distance far enough, and the low probability that the collision between PCI picocell, and reserve resources for network expansion .

Description

一种长期演进网络中物理小区标识的分配方法 A long-term evolution method for allocating a physical cell identifier of the network

技术领域 FIELD

[0001] 本发明涉及无线通信网络资源配置技术,尤其涉及长期演进(LTE,LongTermEvolution)系统中物理小区标识(PCI, Physical Cell Identification)的分配方法。 [0001] The present invention relates to a wireless communication network resources, particularly, to a long term evolution (LTE, LongTermEvolution) system, a physical cell identity (PCI, Physical Cell Identification) allocation method.

背景技术 Background technique

[0002] 随着无线通信技术向多业务、宽带化方向的发展,第三代合作伙伴计划(36ΡΡ,3Ϊ(1Generation Partnership Project)启动了长期演进(LTE, Long Term Evolution)项目。 [0002] As wireless communication technology to multi-service, broadband direction, the third Generation Partnership Project (36ΡΡ, 3Ϊ (1Generation Partnership Project) launched a long-term evolution (LTE, Long Term Evolution) project.

[0003] 3GPP发展各种无线宽带接入技术的目的是要为客户提供全方位的移动多媒体服务的体验。 Objective [0003] 3GPP development of various wireless broadband access technology is to provide customers with a full range of mobile multimedia services experience. 但很多条件下,这一目的并未实现,尤其是在边远地区或居民聚集区,因这些区域的信号恶劣导致3GPP的这一目的无法实现。 But in many conditions, this goal has not been achieved, especially in remote areas or population centers, due to poor signal in these areas led to 3GPP for this purpose can not be achieved.

[0004] 一个可行的解决方案,是在家庭范围内部署无需宏基站(macro eNB)即可提供最大移动数据速率的家用基站,根据其功率这些家用基站被称为“微微蜂窝”基站(femtoeNB)。 [0004] a viable solution, the deployment of home base station is a macro base station without (macro eNB) in the home range of movement to provide a maximum data rate, referred to as "picocell" base station (femtoeNB) according to the power of these home base station .

[0005] 根据基站发射功率,不同类型的基站可以分为如下种类: [0005] The base station transmit power, different types of base stations may be divided into the following types:

[0006] (I) +45dBm:能够覆盖室外大约5km的宏基站; [0006] (I) + 45dBm: approximately 5km to cover outdoor macro base station;

[0007] (2) +30dBm:能够覆盖大约0.5km的微蜂窝基站; [0007] (2) + 30dBm: can cover about 0.5km of femtocell;

[0008] (3)+15dBm:能够覆盖室内大约50米范围的微微基站。 [0008] (3) + 15dBm: to cover approximately 50 meters indoor pico base station.

[0009] 家用基站通过公共交换电话网与整个网络相连,这通常可利用入户的数字用户线路(DSL, Digital Sub scriber Line)实现。 [0009] The home base station connected to the public switched telephone network and the whole network, which is commonly available in the home digital subscriber line (DSL, Digital Sub scriber Line) implementation. 家庭成员的手机仅同家中的微微基站通讯,从而可将该家庭的用户与宏基站完全断开。 Family members only phone with a pico base station communication in the home, so the family can be a macro base station and the user completely disconnected.

[0010] 对于上述各种类型的蜂窝小区,系统需要为它们分配物理小区标识PCI,以区分不同小区。 [0010] For each type of cell described above, the system needs to allocate a physical cell identity PCI for them to distinguish between different cells. 并且,相邻的小区采用不同的PCI,可以实现小区间干扰随机化。 And, adjacent cells adopt different the PCI, inter-cell interference randomization can be achieved. PCI可以实现小区专属加扰,即在信道编码后,对干扰信号随机加扰。 PCI can achieve cell-specific scrambling, i.e. after channel encoding, random scrambling signal interference. 通过不同的扰码对不同小区的信息进行区分,让用户设备(UE,UserEquipment)只针对有用信息进行解码,从而降低干扰。 Information to distinguish the different cells by different scrambling codes, so that the user equipment (UE, UserEquipment) for decoding only useful information to reduce interference.

[0011] 因此,为了区分不同的小区,且降低小区间干扰,需要提出PCI的分配方法。 [0011] Accordingly, in order to distinguish the different cells, and reduce inter-cell interference, we need to make PCI allocation method. PCI在网络中的分配,必须在保证宏蜂窝和微微蜂窝所使用的PCI空间不同的前提下,能够使微微蜂窝之间PCI冲突的概率较低,且能够使宏蜂窝(微蜂窝包含在宏蜂窝内)的PCI复用保持足够远的距离。 PCI assignment in the network, must ensure that different PCI space macrocells and picocells are used to precondition can be made between the probability of collision PCI lower picocell and macrocell can be made (microcell included in the macrocell within) the multiplexing PCI held far enough.

[0012] 在LTE R8中,协议规定PCI的范围值为1_504,即总共有504个PCI供分配。 [0012] In LTE R8, the protocol is the PCI 1_504 predetermined range, i.e., a total of 504 PCI for distribution. 如果单纯考虑宏基站的覆盖,那么现有的504个PCI已经足够使用。 If simply consider the macro base station coverage, then the existing PCI 504 enough to use. 但是,如果考虑到在住宅楼里的许多femto基站,则504个PCI未必够用。 However, if you take into account the many femto base station in a residential building, the 504 PCI may not be enough. 并且,在目前的技术中尚没有给出具体如何划分和分配PCI的方法。 And, in the current technology still did not give details on how to divide and allocate PCI method.

发明内容 SUMMARY

[0013] 本发明所要解决的技术问题是提供一种长期演进网络中物理小区标识的分配方法,保证在宏蜂窝和微微蜂窝所使用的PCI空间不同的前提下,能够使宏蜂窝(微蜂窝包含在宏蜂窝内)的PCI复用保持足够远的距离。 [0013] The present invention solves the technical problem is to provide a method for allocating physical cell identity of a long-term evolution network, to ensure that the different spatial PCI macrocells and picocells are used premise, capable macrocell (microcell comprising within the macro cellular PCI) multiplexing holding sufficient distance.

[0014] 为了解决上述技术问题,本发明提供了一种长期演进网络中物理小区标识PCI的分配方法,包括: [0014] To solve the above problems, the present invention provides a long term evolution network physical cell identity PCI allocation method, comprising:

[0015] 从PCI范围内先划分出两块各自连续的PCI空间,其中:一块用于微微基站小区PCI的分配;另一块用于宏基站小区PCI的分配,且分配给宏基站小区的PCI空间足够大,以使宏基站小区的PCI复用距离足够远;PCI复用距离足够远是指组成宏基站足够的宏蜂窝簇的环数乘以小区直径,PCI空间足够大是指分配的PCI数目至少等于足够的宏蜂窝簇的小区总数。 [0015] PCI range from each first divided into two successive PCI space, wherein: a base station for a pico cell PCI assignment; other for dispensing PCI macro base station cells, and the space allocated to the macro base station cell PCI large enough to enable the PCI macro base station cell reuse distance far enough; PCI multiplexing means sufficiently far from the macro base station consisting of a sufficient number of cells multiplied by the loop macrocell cluster diameter, big enough PCI refers to the number assigned to PCI at least equal to the total number of cells sufficient macrocell cluster.

[0016] 进一步地,对于建筑物密度低的稀疏型覆盖场景,一块连续的PCI空间用于微微基站小区PCI的分配是指: [0016] Furthermore, for a low building density sparse coverage scenarios, a continuous base station for a pico cell PCI PCI space allocation means:

[0017] 该连续的PCI空间共有(50±m)个PCI数值用于分配给微微基站小区;其中m =O〜20,根据建筑物密度进行调整。 [0017] The continuous shared PCI space (50 ± m) th PCI values ​​to be assigned to femto cell base station; wherein m = O~20, adjusted according to the density of the building.

[0018] 进一步地,对于建筑物密度高且使用微微基站的密度也高的密集型覆盖场景,一块连续的PCI空间用于微微基站小区PCI的分配是指: [0018] Further, for the high building density and using the pico base station is high density intensive coverage scenarios, a continuous base station for a pico cell PCI PCI space allocation means:

[0019] 该连续的PCI空间共有[(50±m) X 2]个PCI数值用于分配给所述微微基站小区;其中所述m = O〜20,根据建筑物密度进行调整。 [0019] The continuous spaces shared PCI [(50 ± m) X 2] for two PCI value allocated to the femto cell base station; wherein m = O~20, adjusted according to the density of the building.

[0020] 进一步地,另一块连续的PCI空间用于宏基站小区PCI的分配,且分配给宏基站小区的所述PCI空间足够大,以使宏基站小区的PCI复用距离足够远,是指: The PCI space [0020] Furthermore, another space for a PCI continuous cell PCI macro base station allocation, and assigned to the macro base station cell is large enough so that the PCI macro base station cell reuse distance far enough, means :

[0021] 分配的PCI数目至少等于宏蜂窝簇10环内的小区总数。 [0021] The number at least equal to the total number of PCI assigned cells within the macrocell 10 ring clusters.

[0022] 进一步地,还包括: [0022] Furthermore, further comprising:

[0023] 从PCI范围内再划分出一块连续的PCI空间,用于预留给宏基站作为宏蜂窝扩容用,或者用于预留给微微基站作为微微蜂窝扩容用。 [0023] PCI range from continuous re-divided into a PCI space reserved for the expansion of a macro base station as a macro or pico base station for reserving to use a picocell expansion.

[0024] 进一步地,还包括: [0024] Furthermore, further comprising:

[0025] 将PCI范围内最后一块连续的PCI空间,用于在已经预留给宏基站PCI空间的前提下预留给微微基站作为微微蜂窝扩容用;或者用于在已经预留给微微基站PCI空间的前提下预留给宏基站作为宏蜂窝扩容用;并且,划分的所有的连续的PCI空间中的PCI数目之和,等于PCI范围内PCI的总数目。 [0025] The last piece of the contiguous range PCI PCI space reserved for the premise of the macro base station has reserved space for PCI as a pico base station with the expansion of picocells; alternatively already reserved for femto base station PCI reserved space under the premise of the macro base station as a macro expansion with; and, all of the number of contiguous PCI PCI and the divided space, equal to the total number of the PCI-PCI range.

[0026] 采用本发明的LTE网络中PCI的分配方法,保证在宏蜂窝和微微蜂窝所使用的PCI空间不同的前提下,能够使宏蜂窝的PCI复用保持足够远的距离,且能够使微微蜂窝之间PCI冲突的概率较低,还能够为网络扩容预留资源。 [0026] The present invention PCI LTE network allocation method, to ensure that different PCI space macrocells and picocells are used premise, capable of holding macrocell multiplexing PCI sufficient distance, and enables femto PCI conflict between cellular low probability, it is also possible to reserve resources for network expansion.

附图说明 BRIEF DESCRIPTION

[0027] 图1为无线网络蜂窝结构中的蜂窝簇的示意图; [0027] FIG. 1 is a schematic diagram of a cellular wireless network clusters in the honeycomb structure;

[0028] 图2表示了微微基站与宏基站的关系以及微微蜂窝的结构示意图; [0028] FIG. 2 shows the relationship between the pico base station and a macro base station and a picocell structural diagram;

[0029] 图3为本发明的长期演进网络中PCI的分配方法实施例流程图。 Flowchart LTE network [0029] The present invention FIG 3 PCI allocation method embodiment.

具体实施方式 detailed description

[0030] 本发明提供的长期演进网络中物理小区标识的分配方法,其发明构思是,将PCI范围(I〜504)划分为三块连续的空间,其中:两块分别用于微微基站的分配和预留,一块用于宏基站的分配和预留,且分配给宏基站的PCI空间足够大,以使宏基站的PCI复用距离足够远。 [0030] LTE network of the present invention provides the method for allocating physical cell identity, the inventive concept, the scope of the PCI (I~504) is divided into three continuous space, wherein: two each for dispensing a pico base station and reserved, and the reservation for dispensing a macro base station and the macro base station assigned to the PCI space large enough to allow the PCI macro base station reuse distance far enough.

[0031] 以下结合附图和优选实施例对本发明的技术方案进行详细地阐述。 [0031] The following embodiments in conjunction with the accompanying drawings and preferred embodiments of the aspect of the present invention will be explained in more detail. 以下实施例仅仅用于说明和解释本发明,而不构成对本发明技术方案的限制。 The following examples are used to illustrate and explain the present invention and are not intended to limit the technical solution of the present invention.

[0032] 如图1所示,宏基站的蜂窝簇最内环是I个小区,第二个环是6个小区,……,第η个环是6X (η-1)个小区(图中η = 4)。 [0032] 1, the macro base station cell cluster I innermost ring is a cell, the second ring is a six cells, ......, the first ring is a [eta] 6X (η-1) th cell (FIG. η = 4).

[0033]那么,η 个环的小区总数则为:(3Χ2) X [1/2ΧηΧ (η_1)]+1 = 3XnX (n_l)+l ; [0033] Then, η, compared with a total number of ring cells: (3Χ2) X [1 / 2ΧηΧ (η_1)] + 1 = 3XnX (n_l) + l;

[0034]当 n = 10 时,10 环的小区总数则为:3X10X (10-1)+1 = 271。 [0034] When n = 10, the total number of cells was 10 ring: 3X10X (10-1) +1 = 271.

[0035] 如图2所示,微微基站是用户家庭中使用的基站,通过DSL接入到网络。 [0035] As shown in FIG 2, the pico base station is used in the user's home, access to the network via DSL. 由于墙面阻挡,因此小区覆盖范围很小,只有相邻小区之间才存在PCI的冲突。 Since the barrier wall, and therefore the cell coverage is small, only the presence of only PCI conflict between neighboring cells.

[0036] 本发明提供的长期演进网络中物理小区标识的分配方法实施例,如图3所示包括以下步骤: [0036] Example method for allocating the LTE network of the present invention provides the physical cell identity, comprising the steps shown in Figure 3:

[0037] 310:从PCI范围内先划分出两块各自连续的PCI空间,其中,一块用于微微基站小区PCI的分配;另一块用于宏基站小区PCI的分配,且分配给宏基站小区的PCI空间足够大,以使宏基站小区的PCI复用距离足够远; [0037] 310: PCI range from each first divided into two successive PCI space, wherein a base station for a pico cell PCI assignment; other for dispensing PCI macro base station cells, and the cell assigned to the macro base station PCI space is large enough to enable the PCI macro base station cell reuse distance far enough;

[0038] 320:从PCI范围内再划分出两块连续的PCI空间,一块用于预留给宏基站作为扩容用,另一块用于预留给微微基站作为扩容用;并且,划分的所有的所述连续的PCI空间中的所述PCI数目之和,等于所述PCI范围内所述PCI的总数目,结束流程。 [0038] 320: PCI within the range of from two consecutive subdividing the PCI space reserved for an expansion of a macro base station as, other for expansion is reserved for use as a pico base station; and, all of the divided PCI of the number of said continuous space and PCI, PCI is equal to the total number within the range of the PCI, the flow is terminated.

[0039] 实施例一 [0039] Example a

[0040] 对于一般市区覆盖场景,即有一定的建筑物、但密度不是特别高,PCI空间的分配方法如下: [0040] For general urban coverage scenarios, i.e., certain buildings, but not particularly high density, PCI space allocation method is as follows:

[0041] 第一步:为微微基站小区分配连续的一块PCI空间,范围为I〜50,其中有50个PCI数值; [0041] The first step: a pico base station is assigned a contiguous cell PCI space, the range of I~50, of which 50 PCI value;

[0042] 这样可以满足在微微蜂窝覆盖区域中PCI的冲突概率很低的要求,进而可以优化诸如移动台在网络中通话的掉话率等指标。 [0042] PCI collision probability which can meet requirements of low pico cell coverage area, and thus can be optimized such as the mobile station call drop rate in the network and other indicators.

[0043] 第二步:为宏蜂窝簇基站小区分配足够大的一块连续的PCI空间,范围为51〜321,其中PCI数目为271 ; [0043] The second step: the base station assigned to the macro cell cluster a large enough continuous PCI space, the range of 51~321, where 271 is the number of PCI;

[0044] 以城区小区半径500米为典型值,郊区小区半径2000米为典型值,并设η = 10。 [0044] In a cell radius of 500 meters are typical urban, suburban cell radius is 2000 m are typical, and let η = 10. 那么采取这一步骤后,在城区的PCI典型复用距离约为10X500X2 = 10000米,而郊区的PCI典型复用距离约为2000X10X2 = 40000米。 After then taking this step, the PCI typical urban reuse distance of about 10X500X2 = 10000 meters, while typical suburban PCI reuse distance of about 2000X10X2 = 40000 m. 可见,这样可以保证宏蜂窝的PCI的复用 Visible, so it can ensure macrocell PCI multiplexing

距离足够远。 Far enough away.

[0045] 第三步:为宏蜂窝簇基站预留一块连续的PCI空间,范围是322〜447,其中PCI数目为126,用于宏基站扩容加入蜂窝; [0045] The third step: a reserved space for PCI contiguous clusters macrocell base station, the range of 322~447, wherein the number of PCI 126, the macro base station for the cellular expansion was added;

[0046] 第四步:为微微基站预留一块连续的PCI空间,范围是448〜504,其中PCI数目为57。 [0046] The fourth step: a reserved space for a PCI continuous pico base stations, the range of 448~504, where 57 is the number of PCI.

[0047] 考虑到未来微微基站的数量会很大,因此为其预留这块空间,在需要时可以进一步优化上述指标。 [0047] Considering the future will be a large number of femto base stations, and therefore space reserved for this, these indicators can be further optimized if necessary. 预留PCI空间能够进一步降低微微蜂窝之间PCI冲突的概率。 PCI space reserved for PCI can further reduce the probability of collision between femto cell.

[0048] 实施例二 [0048] Second Embodiment

[0049] 对于郊区和农村覆盖场景,即建筑物密度低,PCI空间的分配方法如下:[0050] 第一步:为微微基站分配一块连续的PCI空间,范围是I〜30,其中有30个PCI数值;[0051] 当然,由实施例一、二来看,对于一般城区或郊区、农村覆盖场景,分配给微微基站的PCI数值在(50±m)的范围内均是可以的,其中m = O〜20,根据具体的建筑物密集度进行调整。 [0049] For suburban and rural coverage scenarios, i.e. low building density, PCI space allocation method is as follows: [0050] The first step: dispensing a continuous space for a PCI pico base stations, the range I~30, of which 30 Numerical PCI; [0051] of course, the first embodiment, two look for general urban or suburban, rural coverage scenarios, the pico base station assigned to the PCI value in the range (50 ± m) are possible in which the m = O~20, be adjusted according to the specific building intensity. [0052] 第二步:为宏蜂窝簇基站分配足够大的一块连续的PCI空间,范围是31〜301,其中PCI数目为271 ;[0053] 这样可以保证宏蜂窝的PCI的复用距离足够远。 [0052] The second step: the base station to the macrocell cluster allocated a large enough continuous PCI space, the range of 31~301, where 271 is the number of PCI; [0053] This ensures macrocell PCI multiplexing sufficient distance . [0054] 第三步:为宏蜂窝簇基站预留一块连续的PCI空间,范围是302〜447,其中的PCI数目为146,可用于扩容加入宏蜂窝;[0055] 第四步:为微微蜂窝预留PCI空间,范围是448〜504,其中的PCI数目为57。 [0054] The third step: a reserved space for PCI contiguous clusters macrocell base station, the range of 302~447, the number of which is PCI 146, can be added to the macro expansion; [0055] Step Four: To picocell PCI space reserved, in the range of 448~504, the number of which is 57 PCI. [0056] 预留PCI可以进一步降低微微蜂窝之间PCI冲突的概率。 [0056] PCI reservation may further reduce the probability of collision between PCI picocell. [0057] 实施例三[0058] 对于密集城区场景,即建筑物密度较高且使用微微基站的密度也较高的区域,PCI空间的分配方法如下:[0059] 第一步:为微微蜂窝分配一块连续的PCI空间,范围是I〜100,其中有100个数值;[0060] 当然,对于建筑物高密度覆盖场景,PCI数值在[(50±m) X2]的范围内均是可以的,其中m = O〜20,根据具体建筑物的密集度进行调整。 [0057] Third Embodiment [0058] For dense urban scene, i.e. high building density and a density higher femto base station area, PCI space allocation method is as follows: [0059] Step: distribution of picocell a continuous PCI space, the range I~100, which has the value 100; [0060] of course, for building high-density coverage scenarios, PCI values ​​in the range [(50 ± m) X2] are both possible, wherein m = O~20, be adjusted to the specific density of the building. [0061] 第二步:为宏蜂窝簇基站分配一块足够大的连续的PCI空间,譬如范围是101〜371,其中的PCI数目为271 ;[0062] 第三步:为宏蜂窝簇基站预留一块连续的PCI空间,范围是372〜447,其中的PCI数目为76,用于扩容加入宏蜂窝;[0063] 考虑到在密集城区,宏基站的密度已经较高,不太可能进行大规模地扩容,故此步骤为宏蜂窝簇预留的PCI空间仍可以满足扩容需求。 [0061] The second step: the base station assigned to a macrocell clusters large enough contiguous space of PCI, for example in the range of 101~371, the number of which is 271 PCI; [0062] The third step: the base station are reserved for macrocell clusters a continuous PCI space, the range of 372~447, wherein the number of PCI was 76, was added to the macro expansion; [0063] in consideration of the dense urban macro base station has a higher density, it is less likely to be a large scale expansion, therefore steps macrocell cluster PCI space is still reserved to meet the expansion needs. [0064] 第四步:为微微基站预留一块连续的PCI空间,范围是448〜504,其中的PCI数目为57。 [0064] The fourth step: a reserved space for a PCI continuous pico base stations, the range of 448~504, the number of which is 57 PCI. [0065] 预留PCI空间可以进一步降低微微蜂窝之间PCI冲突的概率。 [0065] PCI space reserved may further reduce the probability of collision between PCI picocell.

Claims (6)

  1. 1.一种长期演进网络中物理小区标识PCI的分配方法,包括: 从PCI范围内先划分出两块各自连续的PCI空间,其中:一块用于微微基站小区PCI的分配;另一块用于宏基站小区PCI的分配,且分配给所述宏基站小区的所述PCI空间足够大,以使所述宏基站小区的PCI复用距离足够远;所述PCI复用距离足够远是指PCI的复用距离等于组成所述宏基站足够的宏蜂窝簇的环数乘以所述宏基站小区直径,所述PCI空间足够大是指分配的PCI数目至少等于所述足够的宏蜂窝簇的小区总数; 其中,宏蜂窝簇的小区总数为3n(nl)+l,其中η为宏蜂窝簇的环数。 A long-term evolution network physical cell identity PCI allocation method, comprising: a first range from the PCI divided into two respective contiguous PCI space, wherein: a base station for a pico cell PCI assignment; other for Acer PCI dispensing station cell, the macro base station and assigned to the cell PCI space large enough to allow the PCI macro base station cell reuse distance far enough; the PCI reuse distance sufficiently far refers to the PCI complex ring by a distance equal to the macro base station composition sufficient macrocell cluster diameter multiplied by the macro base station cell, the PCI space is sufficiently large dispensing means at least equal to the number of PCI total number of cells sufficient macrocell clusters; wherein the total number of the macro cell cluster is 3n (nl) + l, where η is a macrocell cluster ring.
  2. 2.按照权利要求1所述的方法,其特征在于,对于建筑物密度低的稀疏型覆盖场景,一块连续的PCI空间用于微微基站小区PCI的分配是指: 该连续的PCI空间共有(50±m)个PCI数值用于分配给所述微微基站小区;其中所述m = O〜20,根据建筑物密度进行调整。 2. The method according to claim 1, characterized in that, for a low building density sparse coverage scenarios, a continuous base station for a pico cell PCI PCI space allocation means: The continuous shared PCI space (50 ± m) for a PCI value allocated to the femto cell base station; wherein m = O~20, adjusted according to the density of the building.
  3. 3.按照权利要求1所述的方法,其特征在于,对于建筑物密度高且使用微微基站的密度也高的密集型覆盖场景,一块连续的PCI空间用于微微基站小区PCI的分配是指: 该连续的PCI空间共有[(50±m) X 2]个PCI数值用于分配给所述微微基站小区;其中所述m = O〜20,根据建筑物密度进行调整。 3. The method according to claim 1, characterized in that, for building density and high density using the pico base station is also high intensive coverage scenarios, a continuous base station for a pico cell PCI PCI space allocation means: the continuous space shared PCI [(50 ± m) X 2] for two PCI value allocated to the femto cell base station; wherein m = O~20, adjusted according to the density of the building.
  4. 4.按照权利要求1至3任一项所述的方法,其特征在于,另一块连续的PCI空间用于宏基站小区PCI的分配,且分配给所述宏基站小区的所述PCI空间足够大,以使所述宏基站小区的PCI复用距离足够远,是指: 所述分配的PCI数目至少等于所述宏蜂窝簇10环内的小区总数,其中宏蜂窝簇η环内的小区总数为:3η(η-1)+1。 4.1 method according to any one of claim 3, characterized in that, the other continuous space for a PCI assignment PCI macro base station cell, the macro base station and assigned to the cell PCI large enough , so that the macro base station cell multiplexing PCI far enough, means that: the number at least equal to the total number of PCI assigned cells within the cluster ring of the macrocell 10, wherein the total number of cells within a macrocell cluster ring η : 3η (η-1) +1.
  5. 5.按照权利要求1至3任一项所述的方法,其特征在于,还包括: 从所述PCI范围内再划分出一块连续的PCI空间,用于预留给所述宏基站作为宏蜂窝扩容用,或者用于预留给所述微微基站作为微微蜂窝扩容用。 5. A method according to claim any one of claims 1 to 3, characterized by further comprising: from said PCI within the range of subdividing a continuous PCI space reserved for the macro base station as a macro by expansion, or reserved for the femto base station as a femtocell expansion.
  6. 6.按照权利要求5所述的方法,其特征在于,还包括: 将所述PCI范围内最后一块连续的PCI空间,用于在已经预留给所述宏基站所述PCI空间的前提下预留给所述微微基站作为微微蜂窝扩容用;或者用于在已经预留给所述微微基站所述PCI空间的前提下预留给所述宏基站作为宏蜂窝扩容用;并且,划分的所有的所述连续的PCI空间中的所述PCI数目之和,等于所述PCI范围内所述PCI的总数目。 6. The method according to claim 5, characterized in that, further comprising: the range within the last one of the successive PCI PCI space reserved for the premise to the macro base station has a pre-PCI space the pico base station is left as a pico expansion; or reserved for the macro base station as a macro expansion is used in the premise has been reserved for the femto base station PCI space; and, all of the divided PCI of the number of said continuous space and PCI, PCI is equal to the total number of the PCI within the range.
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